title: Synthesis and characterization of palladium and palladium-cobalt nanoparticles on Vulcan XC-72R for the oxygen reduction reaction.
abstract: A single-source approach was used to synthesize bimetallic nanoparticles on a high-surface-area carbon-support surface. The synthesis of palladium and palladium-cobalt nanoparticles on carbon black (Vulcan XC-72R) by chemical and thermal reduction using organometallic complexes as precursors is described. The electrocatalysts studied were Pd/C, Pd2Co/C, and PdCo2/C. The nanoparticles composition and morphology were characterized using inductively coupled plasma mass spectrophotometer (ICP-MS), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray fluorescence spectroscopy (EDS), X-ray diffraction (XRD), and transmission electron microscopy (TEM) techniques. Electrocatalytic activity towards the oxygen reduction reaction (ORR) and methanol tolerance in oxygen-saturated acid solution were determined. The bimetallic catalyst on carbon support synthetized by thermal reduction of the Pd2Co precursor has ORR electrocatalytic activity and a higher methanol tolerance than a Pt/C catalyst.
authors.affiliation: Department of Chemistry and NASA-URC Center for Advanced Nanoscale Materials, University of Puerto Rico , San Juan 00936-8377, Puerto Rico.
authors.forename: Lisandra
authors.initials: L
authors.lastname: Arroyo-Ramírez
authors.forename: Rubenier
authors.initials: R
authors.lastname: Montano-Serrano
authors.forename: Tatiana
authors.initials: T
authors.lastname: Luna-Pineda
authors.forename: Félix R
authors.initials: FR
authors.lastname: Román
authors.forename: Raphael G
authors.initials: RG
authors.lastname: Raptis
authors.forename: Carlos R
authors.initials: CR
authors.lastname: Cabrera